1. Tag question
We use tag question at the end of affirmative or negative statements to ask for confirmation or to validate information. An affirmative statement is followed by a negative tag, and vice versa. Tag is always separated from the statement by a comma.
Example:
You like French food, don´t you?
He can play table tennis, can´t he?

2. .
The verb of the tag must match that of the statement: if the verb to be, so is the tag ; if the verb is present simple, the tag is do, does, don´t or doesn´t; if the verb is past simple, the tag is did or didn´t, etc.
Example:
It is going to rain, isn´t it?
He shouldn´t play with that, should he?
They are working, aren´t they?

3. do we?—don´t they?– can you?—can´t he?– doesn´t she?
exercises
Complete:
1.- You can´t skateboard on Lord Howe Island,_____________
2.- Bears hibernate in winter, __________
3.- Your mom likes animals, ___________
4.- He can speak three languages, _________
5.- We don´t have an exam tomorrow, ________
do we?—don´t they?– can you?—can´t he?– doesn´t she?

4. . French fries come from France, don´t they?
Your sister likes peaches, doesn´t she?
Your father has red hair, doesn´t he?
I ride a bike to school, don´t I?
It smells like chocolate, doesn´t it?
They don´t have any homework today, do they?
We don´t have any classes tomorrow, do we?
There aren´t any bears near here, are there?

5. . You’re taller than I am, aren´t you?
I can go home early today, can’t I
Our school is the best, isn’t it?
Ostriches can´t fly, can they?
This classroom isn’t too noisy, is it?
You don’t have a pet spider, do you?
He doesn’t like beans, does he?
You can run really fast, can´t you?

6. . You can´t cook, can you? It was really cold yesterday, wasn´t it?
Your mom can juggle, can´t she?
We’re good students, aren’t we?
Your dog doesn´t have big ears, does it?